I have never been kicked in the nuts but I have been hit in the nuts while playing cricket. I was fielding, wasn't paying much attention, next thing I knew was that feeling as though a part of me was gone.

Oh man, let me tell you, it hurts like a bit*h. Good thing it was just a tennis ball we were playing with, if it was one of those wooden real thing, good god, lets hope THAT never happens to someone.